Recall that a function can be thought of as a machine which takes an input in (say x) and then depending on what that input is, it returns an output (say y) by some predefined rule (say f). The graph ...

A programmable logic controller (PLC) is an industrial solid-state computer that monitors inputs and outputs, and makes logic-based decisions for automated processes or machines.

Making use of the inputs and outputs on a VFD can prove very beneficial to an application.

Many production activities generate undesirable outputs in conjunction with the desirable outputs. In this paper we present the first estimates of a multiple-input, multiple-output directional ...